#include <stdio.h>

int a[27];
int main()
{
    int i,n,j=1;
    a[1]=1;
    printf("The original order of cards is (r:rad b:block):\n");
    for(i=2;i<=26;i++)
    {   
	    n=1;
    do{
        if(j>26)j=1;
	if(a[j])j++;
	else{
	if (n==3) a[j]=i;
	  j++;
	  n++;
	}
     } while(n<=3);
   }

for(i=1;i<=26;i++)
  {
    printf("%c",a[i]>13?'r':'b');
    printf("%2d",a[i]>13?a[i]-13:a[i]);
  }
    printf("\n");
    return 0;
}
